Question

(a + b)2 + (a - b)2​

Answer 1

Answer:

$2( {a}^{2} + {b}^{2} )$

Step-by-step explanation:

(a+b)² + (a-b)²

a² + b² + 2ab + ( a² - 2ab + b² )

a² + b² + 2ab + a² - 2ab + b²

2a² + 2b²

2(a²+b²)

Answer 2

Answer:

(a+b)^2=a^2 +b^2 +2ab

(a-b)^2=a^2+b^2-2ab

therefore,(a + b)2 + (a - b)2=a^2 +b^2 +2ab+a^2+b^2-2ab

Final ANSWER,2a^2+2b^2